Remote Intelligent O&M Online Monitoring Solution for Remote Intelligent Zhihu - IoT

https://zhuanlan.zhihu.com/p/2020219995397824931
As a professional provider of IoT data acquisition solutions and an expert in industrial IoT data acquisition, the editor of Shanghai Data Acquisition IOT Technology Co., Ltd， (daq-iot) hereby presents the following introduction, and sincerely welcomes discussions and exchanges.
Supported Communication Interfaces: CAN, RS485, Mbus, 4–20mA, Profibus, CC-Link, HART, digital I/O, etc.
Industrial Protocols: Modbus RTU/TCP, HJ212, IEC104, DLT645, DLMS, IEC61850, MQTT, etc.
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As IoTData Acquisitionsolution Professional provider,Industry IoTData Acquisition expert (professional account), Shanghai DAQ-IoT website editor daq iot, would like to introduce the following content here and sincerely welcome everyone to discuss and exchange ideas. Can handle the following common communication interfaces:
CAN/RS485/Mbus/4~20mA/profibus/CC-Link/HART/IO switch quantity and other industrial Protocol:
modbus RTU TCP/HJ212/IEC104/DLT645/DLMS/IEC61850/MQTT provides SCADA monitoring software for upper computer development
As a professional provider of IoT data acquisition solutions and an expert in industrial IoT data acquisition, the editor of Shanghai Data Acquisition IoT (daq-iot) hereby presents the following introduction, and sincerely welcomes discussions and exchanges.
Supported Communication Interfaces: CAN, RS485, Mbus, 4–20mA, Profibus, CC-Link, HART, digital I/O, etc.
Industrial Protocols: Modbus RTU/TCP, HJ212, IEC104, DLT645, DLMS, IEC61850, MQTT, etc.

1. Data Acquisition IoT Power Boosting Station Equipment and Instrument Image Recognition Scheme
2. Surge Arrester Online Shanghai DAQ-IoT Network Technology Monitoring Instrument Image (provided byDAQ-IoT)
3. core functionality The core function of this meter is to continuously monitor the installation of Shanghai DAQ-IoT network technology on the booster station (or substation, transmission line)Metal oxide lightning arrester The operational status. Simply put, it is a "data acquisition IoT health Shanghai DAQ-IoT network technology monitoring instrument" used for lightning arresters.
4. Shanghai DAQ-IoT Network technology monitoring object: lightning arrester
5. The function of lightning arresterProtect electrical equipment (such as transformers, switches, etc.) from damage caused by lightning overvoltage and operational overvoltage. Under normal circumstances, lightning arresters are insulated from the ground; When an overvoltage occurs, it quickly conducts, releasing a huge current into the ground to protect the equipment behind it.
6. key parametersUnder normal operating voltage, a lightning arrester will have an extremely small current passing through, which is called Full current or Leakage current。
7. How does this table work This Shanghai DAQ-IoT network technology monitoring instrument is connected in series with the grounding circuit of the lightning arrester to measure this critical Leakage current。
8. dial readingYou can see that the units on the dial are MA (milliampere)The scale ranges from 0 to 3.0 mA. This means it measures small currents in milliampere level.
9. Normal stateDuring normal operation of the power system, the pointer will indicate a very small value, usually at 0.5 mA ~ 1.5 mA Between (specific values depend on system voltage and lightning arrester model). This stable and small current is normal.
10. Model Interpretation：JCQ4A3-10/800-0Y
11. 10It may indicate that the rated voltage of the system is 10kV (or other relevant voltage levels, to be determined on site).
12. 800Usually, it indicates that the rated discharge current of the lightning arrester is 800A.
13. Why do we need Shanghai DAQ-IoT technology to monitor this current? The monitoring of leakage current byShanghai DAQ-IoTis an important basis for determining the health of lightning arresters. If there is an abnormal current, it usually means that there may be a problem with the lightning arrester:
14. dampIf the internal seal of the lightning arrester fails and moisture enters, it will cause a decrease in its insulation performance and leakage current*Significant increase*If the pointer reading continues to rise or suddenly becomes very large, this is a very dangerous signal indicating that the lightning arrester may have failed and needs to be replaced immediately.
15. Aging/deteriorationAs the running time increases, the valve plate of the lightning arrester will gradually age, and its characteristics will change, which will also lead to changes in leakage current.
16. internal faultInternal cracks, short circuits, and other faults can also be reflected in the current.
17. summary This table is a "sentinel" used for monitoring the operation status of lightning arresters in the Real-time Shanghai DAQ-IoT network technology in the booster station. O&M personnel conduct regular inspections, record the readings of this meter, and compare them horizontally and vertically with historical data and readings of similar lightning arresters. Once an abnormal increase or drastic fluctuation in current is detected, a warning can be issued in a timely manner, and maintenance or replacement can be arranged*Prevent equipment damage and even power grid accidents caused by the failure of lightning arrestersEnsure the safe and stable operation of the power grid.
    **Simply put, it measures a small "leakage" current of the lightning arrester to tell O&M personnel whether the arrester is still healthy.*
18. insulator Image (provided byDAQ-IoT) Visual inspection
19. Sulfur hexafluoride concentration detector Image (provided byDAQ-IoT)
20. core functionality The core function of this system is*Real-time、 Online Shanghai DAQ-IoT technology monitors the concentration of sulfur hexafluoride (SF6) gas in specific environments (usually distribution rooms, switch rooms, GIS rooms, etc.)*And when the concentration exceeds the safety standard, an alarm will be issued, and the ventilation system will be activated in conjunction to ensure personnel safety.
21. Shanghai DAQ-IoT Network technology monitoring object: SF6 gas
22. The use of SF6 gasSF6 is a colorless, odorless, non-toxic, and non flammable inert gas that has*Extremely excellent insulation and arc extinguishing performance*Therefore, it is widely used in high-voltage and ultra high voltage power equipment, such as:
23. SF6 circuit breaker
24. GIS (Gas Insulated Composite Apparatus)
25. High-voltage switchgear
26. Risk of SF6 gas：
27. suffocation riskSF6 gas is about 5 times heavier than air. Once a leak occurs, it will accumulate in low-lying areas such as cable trenches and equipment room bottoms,Replace oxygen in the air, causing local space hypoxiaThere is a risk of suffocation and death for personnel entering such environments.
28. Toxicity of decomposition productsAt high temperatures where electric arcs are generated during the opening and closing of power switches, SF6 gas will decompose, producing toxic decomposition products such as thionyl fluoride (SOF2) and thionyl fluoride (SO2F2), which pose a great threat to human health.
29. greenhouse effectSF6 is explicitly stated in the Kyoto Protocol*Powerful greenhouse gasesIts global warming potential is carbon dioxide23900 times*Strictly monitoring and sealing it withShanghai DAQ-IoTtechnology is also a requirement for environmental protection.
30. summary This "SF6 gas concentration online Shanghai DAQ-IoT network technology monitoring system" is a key equipment for ensuring the safety of indoor workers in power facilities.
31. Main transformer control cabinet Image (provided byDAQ-IoT)
32. pressure gauge Image (provided byDAQ-IoT)
33. Main transformer oil surface temperature controller Image (provided byDAQ-IoT)
34. Main transformer tap changer Image (provided byDAQ-IoT)
35. Main Transformer Table DAQ-IoT Image (provided byDAQ-IoT)
36. Main Transformer Oil Tank Scale Data Acquisition Image (provided byDAQ-IoT)
37. gas relayData Acquisition Image (provided byDAQ-IoT) The inspection of gas relays is a part of transformer inspection*top priority*。
38. Check gas volume (core!)：
39. Observe the top of the relay*glass windowLook insideplenum chamber*Is there any gas accumulation inside.
40. [Key]：As long as gas is seen, no matter how much (even if it is only 50mL), it must be recorded and reported! This is ironclad evidence of potential internal faults.
41. Check the gas color (to assist in determining the type of fault)：
42. Colorless and odorlessIt could be air.
43. Yellow, flammableWood insulation materials (such as insulation cardboard) overheat.
44. Grey, blackInsulating oil carbonizes due to arc discharge.This is a very dangerous signal!
45. whiteGas generated by insulation paper or cardboard malfunction.
46. Check the oil level and leakage：
47. Confirm whether the oil level of the relay itself is within the normal scale line.
48. Check for oil leakage at the interfaces of relays, windows, and lead cables.
49. Check the control box and signals：
50. Check whether the signal relays for "light gas" and "heavy gas" are activated and whether the signals can be correctly uploaded to the backend monitoring system.
51. Switchgear Data Acquisition Shanghai DAQ-IoT Network Technology Monitoring Image (provided byDAQ-IoT) NRJB21603623B0106 (QR code automatic recognition)
52. Thermo-hygrometer Image (provided byDAQ-IoT)
53. manipulator Image (provided byDAQ-IoT)
54. Protection pressure plate Data Acquisition Shanghai DAQ-IoT Network technology monitoring
55. picture
56. bus coupler cabinet Image (provided byDAQ-IoT)
57. Main transformer respirator Image (provided byDAQ-IoT) Normally blue, replace with pink
58. Coordinated control from cabinet Data Acquisition Shanghai DAQ-IoT network technology monitoring Image (provided byDAQ-IoT)
59. Communication power supply screen Image (provided byDAQ-IoT)
60. fuel gauge Image (provided byDAQ-IoT)
61. energy storage cabinet Image (provided byDAQ-IoT)
62. Scene Recognition
63. Damaged scene: Ceramic insulator: cracks, defects, and large-scale peeling of glaze surface (this is a serious defect that may cause flashover or breakdown). Lightning arrester: Ceramic or composite casing with cracks or damage. Waiting for abnormal appearance
64. Stain scene: Insulator surface: Accumulation of dust, salt alkali dirt, bird droppings, industrial pollutants, etc. Oil stains and leaks: Fresh or old oil stains on the equipment body or pipeline connections indicate the presence of leaks There are obvious abnormal classes
65. Foreign object scene: There are abnormal objects such as bird nests and plastic bags on critical routes or equipment.
66. Computing equipment parameters NF5280M5 6242 * 2 32G * 4 1.2T SAS * 2+4T SATA * 3 PM8222 RTX4080 8G graphics card dual port gigabit+dual port ten gigabit with module 800W * 2 (Shanghai DAQ-IoT Network Technology Edge Computing Analysis Host) CPU: 2 chips, X86 architecture, main frequency ≥ 2.5GHz, number of cores ≥ 16; Memory ≥ 4 * 32GB DDR4; Hard disk ≥ 1T * 4 mechanical hard disk, supporting RAID 0,1,5; Graphics card: independent graphics card network port: onboard dual port gigabit network port and gigabit or above optical port power supply: 1+1 redundant power supply; Inspection host